CN217699210U

CN217699210U - Silicon carbide tubular micro-flow field reactor

Info

Publication number: CN217699210U
Application number: CN202221361500.4U
Authority: CN
Inventors: 赵跃; 罗福战; 易磊; 张锴; 孟繁荣; 郭凯; 李玉光
Original assignee: Nanjing Advanced Biomaterials And Process Equipment Research Institute Co ltd
Current assignee: Nanjing Advanced Biomaterials And Process Equipment Research Institute Co ltd
Priority date: 2022-06-01
Filing date: 2022-06-01
Publication date: 2022-11-01
Anticipated expiration: 2032-06-01

Abstract

The utility model discloses a silicon carbide tubular microflow field reactor, which comprises a tube box, silicon carbide reaction tubes, two main tube plates and two reaction tube plates, wherein the main tube plates are arranged at the two ends of the tube box and seal the interior of the tube box, the reaction tube plates are arranged at the outer sides of the main tube plates, and annular gaskets are arranged between the two reaction tube plates; corresponding through holes are formed in the main tube plate and the reaction tube plate, the corresponding through holes in the two plates are connected through a double-cone sealing ring, and machining conical surfaces are arranged at the parts of the through holes, which are in contact with the double-cone sealing ring; the silicon carbide reaction tube is arranged in the tube box, and two ends of the silicon carbide reaction tube penetrate through the main tube plate and are connected with the double-cone sealing ring. The utility model discloses carborundum tubular microflow field reactor adopts bipyramid type sealing washer to seal reaction tube and tube sheet, makes things convenient for the maintenance dismouting to effectively avoid the damage of dismouting in-process to the reaction tube. Meanwhile, the device can ensure the parallelism of the flanges in the installation process, the compression amount of the double-cone sealing ring is controllable, and the overall sealing performance is good.

Description

Silicon carbide tubular micro-flow field reactor

Technical Field

The utility model belongs to the technical field of tubular microflow field reactor, in particular to a carborundum tubular microflow field reactor.

Background

The silicon carbide ceramic has the characteristics of high strength, high temperature resistance, high heat conduction and excellent corrosion resistance, and is widely applied to heat exchangers in the field of chemical industry at present.

Silicon carbide is not only made into the heat exchanger, now more and more be used for making the reactor and be used for satisfying the strong reaction system that corrodes and require higher to the heat transfer, and the market application is more at present is plate-type silicon carbide reactor, but the internal passage volume undersize, and single throughput is restricted, and the pressure drop is great simultaneously, and the installation is washd inconveniently.

In recent years, in order to improve the safety, environmental protection and intelligent manufacturing level of the petrochemical industry and accelerate the transformation and upgrading of the industry, the technical application of the novel microchannel reactor equipment and the continuous flow process is worth advocating vigorously. However, in the existing tubular silicon carbide micro-flow field reactor, the sealing form of the tube plate joint is usually sealed by adopting a traditional double-O-ring, so that the tubular silicon carbide micro-flow field reactor is extremely difficult to assemble and disassemble when the number of tubes is large, and the probability of damaging the silicon carbide tubes is high.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model provides a not enough to above-mentioned prior art, the utility model provides a carborundum tubular microflow field reactor, it has that sealing performance is good, easy dismounting's advantage.

The technical scheme is as follows: in order to achieve the above purpose, the utility model adopts the following technical scheme:

a silicon carbide tubular micro-flow field reactor comprises a tube box, silicon carbide reaction tubes, two main tube plates and two reaction tube plates, wherein the main tube plates are arranged at two ends of the tube box and seal the interior of the tube box, the reaction tube plates are arranged on the outer sides of the main tube plates, and an annular gasket is arranged between the main tube plates and the reaction tube plates; corresponding through holes are formed in the main tube plate and the reaction tube plate, the corresponding through holes in the two plates are connected through a double-cone sealing ring, and machining conical surfaces are arranged at the parts of the through holes, which are in contact with the double-cone sealing ring; the silicon carbide reaction tube is arranged in the tube box, and two ends of the silicon carbide reaction tube penetrate through the main tube plate and are connected with the double-cone-shaped sealing ring.

As a preferable or improved scheme:

the outer side of the reaction tube plate is provided with an end enclosure and a plurality of joints, the end enclosure is provided with a through hole, the through hole is connected with the joints, and the through hole on the corresponding surface of the reaction tube plate and the end enclosure is sealed by a sealing ring. As an implementation scheme, the number of the joints is four, two joints are used as the inlet and the outlet of the reaction medium, and two joints are used as the temperature measuring ports.

The main tube plate is fixed with the tube box through a flange.

The through holes on the main tube plate and the reaction tube plate, and the parts contacted with the double-cone sealing ring are provided with processing conical surfaces. The processing conical surface is matched with the conical surface of the double-cone sealing ring, so that the sealing effect is achieved.

The side of the tube plate of the reaction tube, which is not provided with the biconical sealing ring, is communicated with the plurality of through holes through the grooves on the surface of the tube plate. When some through holes do not need to be connected with joints, the through holes are communicated with other through holes, so that the aim of serially connecting the reaction tubes is fulfilled.

And a micro-flow field structural member is filled in the silicon carbide reaction tube to enhance the mixing and heat exchange effects.

The tube plate of the reaction tube is made of materials such as silicon carbide, PTFE (polytetrafluoroethylene), PVDF, PFA or PEEK.

The bottom of the tube box is provided with a heat exchange medium inlet, and the top of the tube box is provided with a heat exchange medium outlet.

Baffle plates at different positions are arranged in the tube box and are fixed through pull rods.

The bottom of the tube box is provided with a base.

Has the advantages that: compared with the prior art, the utility model discloses the dismouting is very difficult when the pipe is in large quantity can be solved traditional two O omnisealings to the device, destroys the problem of carborundum reaction tube easily, and this tubular micro-flow field reactor adopts bipyramid type sealing washer to seal reaction tube and tube sheet, makes things convenient for the maintenance dismouting to effectively avoid the damage of dismouting in-process to the reaction tube. Meanwhile, the device can ensure the parallelism of the flanges in the installation process, the compression amount of the double-cone sealing ring is controllable, the whole sealing performance is good, and a plurality of groups of the double-cone sealing rings can be connected in series to achieve the purpose of prolonging the length of the reaction tube.

Drawings

Fig. 1 is a schematic structural diagram of the device of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, which are not intended to limit the scope of the invention. The modification or replacement of the structure of the utility model can be made without departing from the spirit and substance of the utility model, which all belong to the scope of the utility model.

Examples

A tubular micro flow field reactor is shown in figure 1, and comprises a tube box 1, silicon carbide reaction tubes 2, two main tube plates 3 and two reaction tube plates 4, wherein the main tube plates 3 are arranged at two ends of the tube box 1 to seal the interior of the tube box 1, the reaction tube plates 4 are arranged at the outer sides of the main tube plates 3, and an annular gasket 5 is arranged between the two reaction tube plates; corresponding through holes are formed in the main tube plate 3 and the reaction tube plate 4, and the corresponding through holes in the two plates are connected through a double-cone-shaped sealing ring 6; the silicon carbide reaction tube 2 is arranged inside the tube box 1, and two ends of the silicon carbide reaction tube penetrate through the main tube plate 3 and are connected with a double-cone sealing ring 6. The main tube plate 3 is fixed to the tube box 1 by a flange 10. The parts of the through holes on the main tube plate 3 and the reaction tube plate 4, which are contacted with the biconical sealing ring 6, are provided with processing conical surfaces. The processing conical surface is matched with the conical surface of the double-cone sealing ring 6, so that the sealing effect is achieved. The side of the reaction tube plate 4, which is not provided with the biconical sealing ring 6, is communicated with the plurality of through holes through the grooves on the surface of the tube plate. When some through holes do not need to be connected with joints, the through holes are communicated with other through holes, so that the aim of connecting the reaction tubes in series is fulfilled. The silicon carbide reaction tube 2 is filled with a micro-flow field structure member to enhance the mixing and heat exchange effects.

The main tube plate 3 is used for isolating the shell side and can be made of metal materials, and the reaction tube plate 4 is mainly used for connecting reaction tubes in series. The two ends of the double-cone sealing ring 6 are conical surfaces and are respectively inserted into the through holes of the main tube plate 3 and the reaction tube plate 4, the double-cone sealing ring is made of rubber, and fluororubber, perfluoroether rubber and the like can be used according to the corrosion resistance of a process medium. One side that bipyramid sealing washer 6 is connected main tube sheet 3 prevents that shell side heat transfer medium from being responsible for the through-hole of tube sheet 3 and leaking, connects one side of reaction tube sheet 4, prevents that tube side reaction medium from biconical sealing washer 6 and reaction tube sheet 4 through-hole contact site from leaking. The annular gasket 5 between the main tube plate 3 and the reaction tube plate 4 can ensure the parallelism of the flanges in the installation process and control the compression amount of the double-cone sealing ring 6.

The tube plate 4 is made of silicon carbide, PTFE (polytetrafluoroethylene), PVDF, PFA or PEEK.

The outer side of the reaction tube plate 4 is also provided with an end enclosure 7 and a plurality of joints 8, the end enclosure 7 is provided with a through hole, the through hole is connected with the joints 8, and the through holes on the corresponding surfaces of the reaction tube plate 4 and the end enclosure 7 are sealed through a sealing ring 9. In this embodiment, the number of the joints 8 is four, two are reaction medium inlets and outlets, and two are temperature measuring ports. The temperature measuring port can accurately measure the temperature change of the reaction process, and the temperature change can be effectively adjusted.

The bottom of the tube box 1 is provided with a heat exchange medium inlet 11, and the top is provided with a heat exchange medium outlet 12.

Baffles 13 are arranged at different positions in the tube box 1, and the baffles 13 are fixed by a pull rod 14.

The bottom of the tube box 1 is provided with a base 15.

The utility model discloses the device during operation, heat transfer medium pass through heat transfer medium entry 11 and get into pipe case 1, are responsible for board 3 and bipyramid sealing washer 6 and can effectively prevent it and leak, and reaction medium gets into silicon carbide reaction tube 2 through a joint 8, reacts under heat transfer medium's heating effect, and reaction liquid flows from another joint 8, and heat transfer medium exports 12 discharges from heat transfer medium. The other two joints 8 are connected with a temperature measuring device, so that the temperature change of the reaction process can be accurately measured and effectively adjusted.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of this invention without departing from the spirit thereof.

Claims

1. A silicon carbide tubular micro flow field reactor is characterized by comprising a tube box (1), silicon carbide reaction tubes (2), two main tube plates (3) and two reaction tube plates (4), wherein the main tube plates (3) are arranged at two ends of the tube box (1) to seal the interior of the tube box (1), the reaction tube plates (4) are arranged at the outer sides of the main tube plates (3), and an annular gasket (5) is arranged between the main tube plates and the reaction tube plates; corresponding through holes are formed in the main tube plate (3) and the reaction tube plate (4), the corresponding through holes in the two plates are connected through a double-cone sealing ring (6), and machining conical surfaces are arranged at parts of the through holes, which are in contact with the double-cone sealing ring (6); the silicon carbide reaction tube (2) is arranged in the tube box (1), and two ends of the silicon carbide reaction tube penetrate through the main tube plate (3) and are connected with the double-cone-shaped sealing ring (6).

2. The tubular silicon carbide microflow field reactor according to claim 1, wherein an end enclosure (7) and a plurality of joints (8) are arranged on the outer side of the reaction tube plate (4), a through hole is arranged on the end enclosure (7), the through hole is connected with the joints (8), and the through holes on the corresponding surfaces of the reaction tube plate (4) and the end enclosure (7) are sealed by a sealing ring (9).

3. The silicon carbide tubular microfield reactor according to claim 1, characterized in that the main tube sheet (3) is fixed to the tube box (1) by means of a flange (10).

4. The silicon carbide tubular micro flow field reactor according to claim 1, wherein the side of the reaction tube plate (4) not provided with the biconical sealing ring (6) is communicated with a plurality of through holes through grooves on the surface of the tube plate.

5. The tubular silicon carbide microflow field reactor according to claim 1, wherein the silicon carbide reaction tube (2) is internally filled with microflow field structures.

6. The silicon carbide tubular microfield reactor according to claim 1, wherein the reaction tube plate (4) is of silicon carbide, PTFE, PVDF, PFA or PEEK.

7. The tubular silicon carbide microflow field reactor according to claim 1, wherein said tube box (1) is provided with a heat exchange medium inlet (11) at the bottom and a heat exchange medium outlet (12) at the top.

8. The silicon carbide tubular micro-flow field reactor according to claim 1, characterized in that baffles (13) are arranged at different positions inside the tube box (1), and the baffles (13) are fixed by tie rods (14).

9. The silicon carbide tubular microflux field reactor according to claim 1 is characterized by that, the bottom of the tube box (1) is provided with a base (15).